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Spiral tube
Overview
Spiral pipes, also known as spiral steel pipes or spiral welded pipes, are made by rolling low-carbon structural steel or low alloy structural steel strips at a certain helix angle (called forming angle) into pipe blanks, and then welding the pipe seams together. It can produce large-diameter steel pipes from narrower strip steel.
Product characteristics
Features of spiral pipes: The production process of straight seam welded pipes is simple, with high production efficiency, low cost, and rapid development. The strength of spiral welded pipes is generally higher than that of straight seam welded pipes. Narrow billets can be used to produce larger diameter welded pipes, and billets of the same width can also be used to produce welded pipes of different diameters. However, compared to straight seam pipes of the same length, the weld length increases by 30-100% and the production speed is lower. Therefore, smaller diameter welded pipes mostly use straight seam welding, while larger diameter welded pipes mostly use spiral welding.
Product parameters
Standard | ASTM / EN / JIS / BS / ISO / STK / AS |
Grade | ASTM A53 GR.A / GR.B, A500 GR.A / GR.B / GR.C AS1163 / 1074 BS1387 EN10219 / 10255 |
ISO 65 JIS G3444 / 3445 / 3454 / 3454 STK290-STK540, STKM11A-STKM14C S235JRH, S275JRH, S275J0H, S275J2H, S355J0H, S355J2H, S195T | |
Sizes | Outside Diameter: 219.1-2540mm |
